John p



. 2 Sheets-Sheet 1. J. P.'KIRK.,

PLOW

(N0 ModeL) No. 489.015. Patented Jan. 3, 1893.

(No Model.) 2 Sheets-Sheet 2.

' J. P. KIRK.

I PLOW.

No. 489,015. I Patented Jan. 3, 1893.

UNITED STATES PATENT OFFICE.

JOHN P. KIRK, OF AUSTIN, TEXAS;

PLOW.

SPEOIFIOA'I'ION forming part of Patent No.7489,015, dated January 3, 1893.

Application filed March 181 1892. Serial -No. 425,489- (No model.)

board and scraper; Fig. 3 is a detail, being an enlarged view showing. one ofthe sprocket wheels and the manner of mounting the idler wheels upon their axles; and Fig. 4 is a detail, being a view of a ortion of the chain and wheel and sections view of one of the sprockets.

My inventionrelates to plows which. are

provided with a revolving mold board to adapt them for use in'sticky soil. In this class of plows as heretofore constructed, it has been found necessary to make use of a universal joint in some part of the mechanism for driving the mold board, which construction greatly impairs the efliciency of the-driving mechamsm.

The object of my present invention is to provide an improved plow of the above described class in which the revolving mold board is driven without the intervention ofa,

universal joint, and to thereby simplify the construction of the plow and carriage; .1 accomplish this object as illustrated in the drawings and as hereinafter described.

That which I regard as new will be pointed out in the claims.

In the drawings,-A, indicates-the carriage of the plow. The plow consists of ,a share B and a revolving mold board 0. The share B is secured to a bar or standard b in the usual manner, which standard is rigidly secured at adjusting the beam vertically and looking it "construction more fully, as it is not necessary to a full understanding of the invention. 3 The furrow wheel E is mounted'upon an axle F, which is rigidly attached to the carriage back of the plow, and is downwardly inclined in such amanner as to adapt the wheel Eto rotate ,in a plane which is inclined to the perpendicular, as best shown in Fig. 1. The tire of the wheel E is also inclined so as to present a flat surface to rest upon the ground. 7

The belief the wheel E is provided on the outer side of the wheel with a grooved annular vextension or sprocket wheel 2, which may be made integral with the hub of the wheel E or independently thereof, and is adapted to receive a drive chain J, by means of which motion is communicated to the mold board 0. The chain J is not an ordinary flat chain such as are usually used with sprocket wheels,but

is made up of ordinary chain links, formed of metal circular in cross section. A common chain is used because a fiat chain is not adapted to take the double bend required by'the construction shown.

The mold board 0 is formed of a conca've metal disk mounted at its center upon a suitable axle c' which is carried in a bearing in a bracket b, which bracket is secured to and projects from the standard b. The mold board (J is of such size and is so adjusted as to run behind the upper edge of the plow share,- which ispreferably curved, as shown,,to receive the plowed earth therefrom, substantially as in the common forms of rotary mold board plows. Y

The mold board C'is provided with a ro-- tary disk scraper N, which scraper is journaled upon a shaft 72/, carried by a bracket n,

which is rigidly secured to the frame A, and is so shaped that it holds the scraper in such position that a portion of its periphery bears upon the upper portion of'the mold board 0, whereby it acts to remove any substances which may stick to the mold board as it revolves. The shaft 'n/ is carried in a bearing 'n", which is swiveled on the end of the bracket "The wheel andrmold board 0 are driven from the furrow wheel E by means of the drive chain J which connects the wheels 0 and e, as best shown in Fig.1.

K, K, indicate idler wheels, which arose placed as to be. adapted to act as guides to direct the chain J between the wheels 0 and e, and preventit from interfering either with the wheel E or the mold board O. The idlers K are loosely mounted upon axles L, which are perpendicularly mounted upon supporting rods or bars on, which bars are secured at their inner ends to the bracket 1), as best shown in Fig. 3, and are so shaped as to hold the idlers in proper position for directingthe chain J. As shown, the idlers K, K, should be so placed as to cause the chain J to lie parallel with the wheel E and mold board C.

In order to adapt the sprocket wheels 6 and c to engage the chain J, they are provided with sprockets or lugs l projecting radially from opposite sides of their peripheries, which sprockets Z have inwardly projecting lugs Z formed on them, as best shown in Fig. 4. The sprockets Z are so placed that the lugs I will engage successive links of the chain J. The rims of the Wheels are comparatively narrow. By the above described construction of the sprocket wheels and sprockets, the accumulation of dirt on.the wheels is prevented, as very little surface is exposed where dirt can lodge.

The levers G, G, and their connections for raising or lowering the beam 'D, are not described, as these part'sare not of my invention.

By the construction above described, the mechanism for driving the mold board willnot. be aifected by vertical adjustment of the plow beam, and a high degree of efliciency and strength is secured.

That which I claim as my invention and desire to secure by Letters Patent, is,

1. The combination of acarriage having a furrow wheel provided with a sprocket wheel on its hub, with a revolving mold board provided with a sprocket wheel, and a drive chain connecting the sprckct wheel on the hub of the furrow wheel with the sprocket wheel on the revolving mold board, substantially as described.

2. The combination with a carriage, and a plowshare, of an inclincdfurrow wheel having its hub provided with a sprocket wheel and mounted upon an axle connected with the carriage in rear of the plow share, a plow beam which supports the plow share, a revolving mold hoard provided with a sprocket wheel, and a drive chain extending at an angle between the sprocket wheel on the furrmv wheel and the sprocket wheel on the revolving mold board, substantially as described.

3. The combination of a carriage having a furrow wheel traveling in the line of progression and provided with a sprocket wheel on its hub, with a mold board rotating at an angle to the line of progression and provided with a sprocket wheel, and a drive chain extending at an anglebet-ween. the sprocket wheel on the furrow wheel and the sprocket wheel on the revolving mold board, substantially as described. 1

4. The combination with a plow having a share B, revolving mold board C, a sprocket wheel carried thereby, and a carriage for supporting said plow, of a furrow wheel E, a sprocket wheel mounted thereupon, drive chain J, and devices for guiding said chain, substantially as and for the purpose specified.

5. The combination with a plow, having share B, revolving mold board 0, a sprocket wheel 0 carried thereby, and a carriage adapted to support said plow, of a furrow wheel E, having a sprocket wheel mounted thereupon, drive chain J, and idlers K, K adapted to guide said chain, substantially as and for the purpose specified.

JNO. P. KIRK. 

